“Our Community Guidelines prohibit spam, scams, or other manipulated media, coordinated influence operations, and any content that seeks to incite violence. Since September, we’ve terminated over 8000 channels and thousands of harmful and misleading elections-related videos for violating our existing policies. Over 77% of those removed videos were taken down before they had 100 views. ” […]
Yesterday was the safe harbor deadline for the U.S. Presidential election and enough states have certified their election results to determine a President-elect. Given that, we will start removing any piece of content uploaded today (or anytime after) that misleads people by alleging that widespread fraud or errors changed the outcome of the 2020 U.S. Presidential election, in line with our approach towards historical U.S. Presidential elections.

Source : Supporting the 2020 U.S. election